Creating a zonal cluster


This topic shows you how to create a standard zonal cluster with the default features enabled in Google Kubernetes Engine (GKE). Zonal clusters have a single control plane in a single zone. Depending on your availability requirements, you can choose to distribute your nodes for your zonal cluster in a single zone or in multiple zones.

You can read more about the types of clusters you can create.

Single-zone versus multi-zonal

A single-zone cluster has a single control plane running in one zone. This control plane manages workloads on nodes running in the same zone.

A multi-zonal cluster's nodes run in multiple zones, but it has only a single replica of the control plane. If you need higher availability for the control plane, consider creating a regional cluster instead. In a regional cluster, the control plane is replicated across multiple zones in a region.

Before you begin

Before you start, make sure you have performed the following tasks:

Set up default gcloud settings using one of the following methods:

  • Using gcloud init, if you want to be walked through setting defaults.
  • Using gcloud config, to individually set your project ID, zone, and region.

Using gcloud init

If you receive the error One of [--zone, --region] must be supplied: Please specify location, complete this section.

  1. Run gcloud init and follow the directions:

    gcloud init

    If you are using SSH on a remote server, use the --console-only flag to prevent the command from launching a browser:

    gcloud init --console-only
  2. Follow the instructions to authorize gcloud to use your Google Cloud account.
  3. Create a new configuration or select an existing one.
  4. Choose a Google Cloud project.
  5. Choose a default Compute Engine zone for zonal clusters or a region for regional or Autopilot clusters.

Using gcloud config

  • Set your default project ID:
    gcloud config set project PROJECT_ID
  • If you are working with zonal clusters, set your default compute zone:
    gcloud config set compute/zone COMPUTE_ZONE
  • If you are working with Autopilot or regional clusters, set your default compute region:
    gcloud config set compute/region COMPUTE_REGION
  • Update gcloud to the latest version:
    gcloud components update
  • Multi-zonal clusters use more resources than single-zone clusters. If you are creating a multi-zonal cluster, ensure you have adequate quotas.
  • Ensure you have the correct permission to create clusters. At minimum, you should be a Kubernetes Engine Cluster Admin.

Create a zonal cluster

You can create a zonal cluster by using the gcloud tool or the Google Cloud Console.

If you're developing GKE applications with Visual Studio Code, try creating clusters with Cloud Code.

gcloud

To create a zonal cluster with the gcloud tool, use one of the following commands.

Replace the following:

  • CLUSTER_NAME: the name of your new cluster.
  • CHANNEL: the type of release channel, which can be one of rapid, regular, stable, or None. By default, the cluster is enrolled in the regular release channel if the following flags aren't specified: --cluster-version, --release-channel, --no-enable-autoupgrade, and --no-enable-autorepair.
  • COMPUTE_ZONE: the compute zone for the cluster control plane.
  • VERSION: the version you wish to specify for your cluster.
  • COMPUTE_ZONE,COMPUTE_ZONE1,[...]: the zones in which nodes are created. You can specify as many zones as needed for your cluster. All zones must be in the same region as the cluster's control plane, specified by the --zone flag. For zonal clusters, --node-locations must contain the cluster's primary zone.

Using a specific release channel:

To create a new cluster using a specific release channel, run the following command:

gcloud container clusters create CLUSTER_NAME \
    --release-channel CHANNEL \
    --zone COMPUTE_ZONE \
    --node-locations COMPUTE_ZONE,COMPUTE_ZONE1

Using a specific version:

To create a new cluster using a specific cluster version, run the following command:

gcloud container clusters create CLUSTER_NAME \
    --cluster-version VERSION \
    --zone COMPUTE_ZONE \
    --node-locations COMPUTE_ZONE,COMPUTE_ZONE1

Using the static default version:

To create a new cluster using the static default cluster version, you don't need to specify a cluster version, but you do need to set the release channel to None:

gcloud container clusters create CLUSTER_NAME \
    --release-channel None \
    --zone COMPUTE_ZONE \
    --node-locations COMPUTE_ZONE,COMPUTE_ZONE1

Example

The following command creates a multi-zonal cluster named example-cluster, where the cluster control plane is located in the us-central-a zone, and there are three node locations. The cluster is enrolled in the regular release channel.

When the --num-nodes flag is omitted, the default number of per-zone nodes created by the cluster is three. Because three zones were specified, this command creates a nine-node cluster with three nodes each in us-central1-a, us-central1-b, and us-central1-c.

gcloud container clusters create example-cluster \
    --zone us-central1-a \
    --node-locations us-central1-a,us-central1-b,us-central1-c

Console

To create a zonal cluster with the Google Cloud Console, perform the following tasks:

  1. Go to the Google Kubernetes Engine page in the Cloud Console.

    Go to Google Kubernetes Engine

  2. Click Create.

  3. In the Cluster basics section, complete the following:

    1. Enter the Name for your cluster.
    2. For the Location type, select Zonal, and then select the desired zone for your cluster.
    3. If you are creating a multi-zonal cluster, select the Specify default node locations checkbox, and then choose additional zones in which you'd like the node pools to run.
    4. Choose a Control plane version. Defaults to the recommended option of Release channel. If you must specify a static version, ensure auto-upgrade is enabled for your node pools.

  4. From the navigation pane, under Node Pools, click default-pool.

  5. In the Node pool details section, complete the following:

    1. Enter a Name for the default Node pool.
    2. For static version nodes, choose the Node version.
    3. Enter the Number of nodes to create in the cluster. You must have available resource quota for the nodes and their resources (such as firewall routes).
  6. From the navigation pane, under Node Pools, click Nodes.

  7. From the Image type drop-down list, select the desired node image.

  8. Choose the default Machine configuration to use for the instances. Each machine type is billed differently. The default machine type is e2-medium. For machine type pricing information, refer to the machine type price sheet.

  9. From the Boot disk type drop-down list, select the desired disk type.

  10. Enter the Boot disk size.

  11. Click Create.

After you create a cluster, you need to configure kubectl before you can interact with the cluster from the command line.

Cluster templates

GKE previously supported templates for clusters. Those templates were removed from Google Cloud Console, but are still accessible from the following links:

What's next

Try it for yourself

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